@article{01925178,
title = {Applications of Langenhop inequality to difference equations: Lower bounds and oscillation.},
journal = {Applied Mathematics E-Notes [electronic only]},
volume = {3},
year = {2003},
pages = {80-87},
zbl = {1043.39005},
language = {en},
url = {http://dml.mathdoc.fr/item/01925178}
}
Zafer, Ağacık. Applications of Langenhop inequality to difference equations: Lower bounds and oscillation.. Applied Mathematics E-Notes [electronic only], Tome 3 (2003) pp. 80-87. http://gdmltest.u-ga.fr/item/01925178/